The Oyster River is about 17 miles (27.5 km) long and located in Strafford County, southeastern New Hampshire, United States. It rises in Barrington, flows southeast to Lee, then east-southeast in a serpentine course past Durham to meet the entrance of Great Bay into Little Bay. The bays are tidal inlets of the Atlantic Ocean, to which they are connected by a tidal estuary, the Piscataqua River. The Oyster River reaches tidewater at the base of a dam in the center of Durham, just west of the river's crossing by NH Route 108. Due to siltation, the river is only fully accessible to motorized boats west of the Durham Water Plant for approximately 3 hours on either side of high tide. Boaters have noticed the increasing effect of siltation on navigation since 1998. Although a branch of the Oyster River rises in western Madbury, the Bellamy River is the only river of size in town.
The best method of catching rainbows involves setting traps in shallow, sandy water. Place a small hook in light bait like a salmon egg or powerbait and place it right on the bottom, without any weight.